Exhaust headers with integrated heat shielding and thermal syphoning

An exhaust header with an integrated heat shield is disclosed. In one aspect of the disclosure, the exhaust header comprises a body including an inner wall that defines a cavity through which exhaust gases can be routed. An outer wall is integrally formed with, and radially offset from, the inner wall to define an air gap through which an airflow can be received at an input of the exhaust header and passed along a periphery of the body to collect thermal radiation and route it through an outlet duct. In some embodiments, the exhaust header is coupled to a turbocharger, which itself is coupled to an exhaust outlet of the body and separately, the air gap for effecting an airflow about the turbocharger's perimeter. Further, in various embodiments, the exhaust header is additively manufactured to produce the integrated heat shield and other header components.

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Description
CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of, and right to priority to, U.S. provisional patent application No. 62/981,329, entitled “Exhaust Headers With Integrated Heat Shielding And Thermal Syphoning” filed Feb. 25, 2020, the contents of which are incorporated by reference as if expressly set forth herein.

BACKGROUND Field

The present disclosure relates generally to vehicles, and more particularly, to exhaust headers used in automobiles and other transport structures.

Background

Vehicle exhaust headers may include one or more tubular or pipe-shaped assemblies for collecting exhaust gases from the cylinders and venting the gases, or for transporting the gases to other structures in the vehicle exhaust chain (e.g., muffler, catalytic converter, etc.). The exhaust header may include a collector to receive the gases from a manifold. In some cases, the exhaust header can be used to reduce a back pressure flow generated by the cylinders. In other cases, exhaust headers are simply used to vent the gases from the vehicle via exhaust pipes.

Exhaust headers emit thermal radiation due to the heat of the exhaust gases. The headers often require protective covering to avoid damaging sensitive vehicle parts in the surrounding areas. Thermal wraps are typically used for this purpose. Thermal wraps include a bundle of layers of protective heat-shielding material, with safety wires around the bundle to hold it in place on the body of the header. In addition to lacking aesthetic appeal, the resulting exhaust headers can be bulky and unwieldy owing to the additional step(s) of installing thermal wraps, can add vehicle mass and occupy internal space, can affect fuel economy, and can otherwise impede vehicle performance.

SUMMARY

The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

The present disclosure is generally directed to exhaust headers having integrally-formed heat shields. In various embodiments, the exhaust headers may be coupled to turbochargers or other structures for increasing engine performance. In some embodiments, the exhaust headers are coupled to thermal syphoning elements for venting heated air from the engine bay. In other embodiments, the exhaust headers are additively manufactured to enable flexible design and formation of the integrated heat shield, including using highly precise geometrical features where desirable.

In one aspect of the disclosure, an exhaust header includes a generally tubular body having an inner wall configured to transport exhaust gases through the body from an inlet to an outlet at different locations along the body, and an outer wall integrally formed over the body and radially offset from the inner wall, the inner and outer walls defining an air gap therebetween to reduce radial outflow of heat.

In another aspect of the disclosure, an exhaust header includes a body having an inner wall enclosing a first channel through which exhaust gases flow from a first inlet to a first outlet at different locations on the body, and an outer wall extending around, and offset from, the inner wall to integrally form a second channel, the second channel being narrower than the first channel, wherein the second channel is configured to receive an airflow at a second inlet adjacent one region of the body and to pass the airflow to a second outlet adjacent another region of the body.

In still another aspect of the disclosure, an exhaust header includes an at least partially elongated, bounded first surface forming a first channel through which exhaust gasses are configured to pass from a vehicle engine bay, and a second surface, offset from the first surface and integrally forming a second channel bounded at least in part by the first and second surfaces, the second channel passing an airflow by convection to transit heat out of the vehicle engine bay.

To the accomplishment of the foregoing and related ends, the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed, and this description is intended to include all such aspects and their equivalents.

BRIEF DESCRIPTION OF THE DRAWINGS

Various aspects of exhaust headers with integrated heat shielding and thermal syphoning will now be presented in the detailed description by way of example, and not by way of limitation, in the accompanying drawings, wherein:

FIG. 1 is a perspective view of the exhaust header coupled to a turbocharger and a thermal syphoning duct.

FIG. 2 is a side cross-sectional view of the exhaust header illustrating an example exhaust gas path.

FIG. 3 is another perspective view of the exhaust header illustrating an example air path.

FIG. 4 is a cross-sectional view of the exhaust header illustrating the integrally-formed outer wall offset from the inner wall to form the heat shield.

 DETAILED DESCRIPTION

The detailed description set forth below in connection with the appended drawings is intended to provide a description of various exemplary embodiments of the concepts disclosed herein and is not intended to represent the only embodiments in which the disclosure may be practiced. The terms “exemplary” and “example” used in this disclosure mean “serving as an example, instance, or illustration,” and should not be construed as excluding other possible configurations or as preferred or advantageous over other embodiments presented in this disclosure. The detailed description includes specific details for the purpose of providing a thorough and complete disclosure that fully conveys the scope of the concepts to those skilled in the art. However, the disclosure may be practiced without these specific details. In some instances, well-known structures and components may be shown in block diagram form, or omitted entirely, in order to avoid obscuring the various concepts presented throughout this disclosure.

The principles of this disclosure include an exhaust header having an integrated heat shield. In one aspect of the disclosure, the exhaust header is formed with a heat shield that is integrated with and radially offset slightly from the surface of the header body to form an air gap that extends across the surface and around the perimeter of the header. The offset amount may be uniform throughout, or it may vary along different regions or sections of the body. In another aspect of the disclosure, the exhaust header is additively manufactured to allow for formation of precise geometries, to enable the economic integration of the heat shield without requiring complex conventional techniques like machining, and to reduce or eliminate tedious welding requirements so often used to implement custom header designs. In some embodiments, small tabular-like supporting elements may extend longitudinally in a periodic or staggered fashion along an interior of the air gap to secure the heat shield, and to fix the position of the air gap to its necessary thickness(es) along the different regions of the body. In yet another aspect of the disclosure, the exhaust header is coupled to a thermal syphoning duct for venting the air in the air gap using convection to transfer heat from the exhaust gases to an external region away from sensitive vehicle components. Various additional embodiments of the exhaust header include the use of turbochargers coupled to the exhaust path to enhance engine performance.

Vehicles, for the purposes of this disclosure, are broadly intended to encompass any motorized transport apparatus, including without limitation automobiles of all types (coupes, sedans, etc.), minivans, vans, station wagons, sports utility vehicles, and trucks, as wells as commercial transport structures including buses, trains, and the like.

Conventionally-manufactured exhaust headers are either provided as a standard metallic tube or pipe, or in some cases as a sequence of such tubes, or as a manifold-based implementation incorporating a plurality of such tubes. These configurations may be angled to emit exhaust gases in a desired direction when implemented in a vehicle. Where specific angles not commercially available are required for an application, one or more standard pipes may be segmented and welded together into the desired shape. The latter process is time-consuming and labor intensive, at least because for such custom geometries, the welding operations must be repeated for each vehicle. Variations in precision may arise when relying on this technique.

As noted, conventional exhaust headers may emit significant heat due to the high temperatures of the exhaust gases, thereby requiring additional protective covering to avoid damaging internal vehicle parts in the proximity of these headers. The exhaust headers accordingly may require thermal wraps, which each include a plurality of layers of protective heat-shielding material, using safety wires around the circumference of the bundle to hold the layers of each header in place. The production of the layered exhaust header can add further time to the manufacturing process. The resulting exhaust header is also bulky, cumbersome, larger due to the thermal wraps, and lacks aesthetic design qualities. The wraps also add vehicle mass as well as potential structural or geometric irregularities the header, which may worsen as the wraps potentially shift over time. These factors make precise aerodynamic designs more difficult to achieve, affecting the vehicle's performance.

FIG. 1 is a perspective view of an exhaust header 100 according to an aspect of the disclosure. The exhaust header 100 is coupled to a turbocharger 107 and a thermal syphoning duct 106. The exhaust header 100 includes a body 123 defined in part by an inner wall (obscured from view in FIG. 1), around which integrated heat shielding 105 is formed. The heat shield 105 may be produced by integrally forming an outer wall over the body 123 and offsetting the outer wall by an amount appropriate for the design to include an air gap sandwiched in between the walls. The air gap can extend about a perimeter of the body 123 as an airflow passes through. The exhaust header 100 in various embodiments may include a thermal syphoning inlet 103 to allow air to flow through the air gap and ultimately to be routed out of the exhaust header by thermal syphoning duct 106. The heat shield and its constituent structures are described in more detail with reference to FIGS. 2-4.

In various embodiments, the exhaust header 100 may be coupled to a turbocharger 107. A turbocharger may generally include a small turbine and related components that sit between the engine and the exhaust. The exhaust header 100 may be advantageously configured to provide an exhaust input to the turbocharger 107 to enable the latter to provide the engine with a boosted airflow. Separately, the heat shielding 105 of the exhaust header 100 can be further integrated with the shielding/ducting 101 of the turbocharger 107 located about its periphery to provide a separate airflow for cooling the turbocharger 107. While the turbocharger 107 may in various embodiments respectively be plumbed to both the exhaust header and engine, it is noted that various conventional turbocharger components and connections are omitted from the illustration of FIG. 1 to avoid unduly obscuring the concepts of the disclosure.

In various embodiments, the exhaust headers 100 are additively manufactured (3-D printed), with the heat shielding being co-printed with the body of the exhaust header. The exhaust header 100 may be additively manufactured using Inconel, a Nickel alloy, for example. Other alloys or pure metallic substances may also be suitable in some configurations as print material. Further, in various embodiments, the exhaust header 100 can be co-printed with the thermal syphoning duct 106, or with turbocharger 107 or its housing, for example, in order to integrate the components compactly and efficiently, and to use custom geometries where desired.

FIG. 2 is a side cross-sectional view of the exhaust header 200 illustrating an example exhaust gas path 228 and an air gap cavity 225 separated by inner wall 222 and outer wall 220. In practice, and depending on design considerations, there may in some embodiments be multiple inner or outer walls. FIG. 2 includes a “cutout” 277 of the body 234, which exposes the exhaust cavity 233 for illustrative purposes. As shown by the bold arrows, exhaust gas path 228 flows from exhaust input 221 (which may include multiple inlets 132 as in FIG. 1) through the exhaust cavity 233, and through header outlet 260. While the header outlet 260 may be coupled to a turbocharger, in other embodiments the outlet may be coupled to another component in the exhaust path of the vehicle.

The precise geometry of the body 234 and the outer wall 220, and their relative positions, may vary depending on criteria like the relative thickness of the air gap 224 desired for different designs. For example, in the embodiment shown, the body 234 is generally tube-like, and the outer wall 220 is offset from the inner wall 222 to provide air gap cavity 225, which also may provide the exhaust header 200 with thermal radiation protection. In general, the air gap cavity 225 may be uniform in size across the body 234, or as here, the air cap cavity 225 may be larger in certain regions, and smaller in others. This variation in thickness of the air gap 224 across the exhaust header 200 may be used for addressing various engineering objectives, such as where it is desirable to design different airflows in different regions of the body 234, for example.

In other embodiments, however, the outer wall 220 may be constructed instead to conform more uniformly in shape with the inner wall 222, and to do so in some, most, or all circumferential regions of the body. The thickness of the air gap 224 may therefore vary depending on the design requirements for heat shielding, the need for a particular airflow for use in downstream components, or other factors that may be specific to the vehicle, the exhaust design, or both.

In some embodiments, supports 292 may be used between the outer wall 220 and inner wall 222 to stabilize the air gap cavity 225 and secure the offset between the walls. Supports 292 may be approximately tabular in nature as shown, rather than extending to surround the entire periphery of the body and thus blocking airflow in the air gap cavity 225. In other embodiments, where the outer wall 220 is positioned closer to the inner wall 222, smaller supports (not shown) may be used.

In various embodiments, using additive manufacturing, the inner and outer walls 222 and 220 can be formed using any appropriate geometry. As noted, the air gap cavity 225 may function as part of the heat shield and may also pass an airflow along the external portion of the body 234 to remove the heated air from the engine bay or other location.

Thermal syphoning inlet 103 can be seen at the lower portion of the exhaust header 200. The airflow enters the inlet 103 and passes along the periphery of body 234, receiving thermal radiation from the exhaust cavity 233 as the airflow moves along relative to the body 234. Near the top of FIG. 2, a housing 286 may optionally be installed within which a turbocharger or other exhaust gas component can be positioned. Air gap 224 may be extended up and around the housing 286, and the air from cavity 225 may be arranged to flow in one direction and exit at a designated point (e.g., FIG. 3). Thus, in this arrangement, a device arranged within housing 286 can receive the protective benefits of the airflow through the air gap cavity 225.

In various embodiments, exhaust header 200 including housing 286 may be additively manufactured as a single unit. In this case, the walls can be integrally formed to collect exhaust gas and a built-in radiation shield can route an airflow away from the engine bay. In still other embodiments, components of a turbocharger can be co-printed along with the header to combine the functionality of both components while using precise geometries that can minimize size and mass. Significant amounts of space can be saved where the need for wired bundles of protective covering as per the conventional technique can be eliminated.

FIG. 3 is another perspective view of the exhaust header 300 illustrating an example air path 304 and an exhaust gas path 328. The exhaust header 300 of FIG. 3 is similar to FIG. 1, but is rotated in clockwise direction (into the page) such that now, a side view of the housing 286 is shown, and the thermal syphoning duct 106 is on the right of the image.

With initial reference to the lower portion of the header 300, thermal syphoning inlet 103 may be positioned to receive air 361 from the engine bay or another region where exhaust header 300 is positioned. The exhaust gas inlets 132 include four “fingers” in this embodiment. In an exemplary embodiment, each finger may be plumbed to a different cylinder of a four cylinder vehicle. In various embodiments, however, the architecture of exhaust gas inlets 132 may vary greatly to account for different factors such as the design of the manifold in use, the type of engine, and the like. In some embodiments to reduce size, exhaust gas inlets 132 may instead be configured to establish direct connections with each of the cylinders (or connections using minimal hardware), such that exhaust header 300 may also act as an exhaust manifold.

A first sequence of bold arrows illustrates an exhaust gas path 328 of the exhaust gases that entered inlets 132 and that are collected at the portion of the header shown by the exhaust cavity 391, a front portion of which is cut out for illustration purposes. In some embodiments, the header 300 can be positioned to reduce or eliminate a backflow of exhaust into the cylinders, such as by ensuring that each path through one of the exhaust gas inlets 132 is nearly equal in length where it is collected as shown in the exhaust cavity cutout 391 of body 334. There, the combined and collected exhaust gases can flow up through the body 334. Where a turbocharger is present, the exhaust gases can be used to spin a turbine of the turbocharger, or perform another function, before exiting out of the exhaust gas path 328.

With continued reference to FIG. 3, a thermal syphoning inlet 103 defines the beginning of an air path 304 through which air 361 can flow within the air gap 324 to remove heated air. In various embodiments, the heat-shielded exhaust header 300 may be coupled to a thermal syphoning duct 106 at an end portion of the air path 304. The thermal syphoning duct 106 includes a thermal syphoning outlet 306 through which the heated air in air gap 324 can be vented out of the vehicle. More specifically, the thermal energy from the hot exhaust gasses heats inner wall 222 (FIG. 2), which in turn heats the air in air gap 324. The heated air in air gap 224 may rise along air path 304 and escape through thermal syphoning outlet 306, thus drawing in relatively cooler air through thermal syphoning inlet 103. In this way, for example, relatively cooler air 361 can be drawn into air gap 324 during vehicle operation. The air path 304 can extend between the thermal syphoning inlet 103 and the thermal syphoning outlet 306. The thermal syphoning outlet 306 exhausts the hot air flowing through air gap 224 along air path 304 by the force of convection. The air path 304 from the engine bay 361 can further be channeled to flow past turbocharger 107 (FIG. 1) via turbocharger shielding/ducting 101, to help cool the turbocharger 107 as well.

Thus, the relatively cooler air from the engine bay 361 can be drawn into thermal syphoning inlet 103 by the convection of air. Thermal syphoning duct 106 can receive the airflow and effectively syphon heat from both the exhaust header 100 and the turbocharger 107. Controlled convection of the header surface, kept segregated from the rest of the engine bay, is not possible using conventional thermal wrapping technology.

FIG. 4 is a cross-sectional view of the exhaust header 400 illustrating the integrally-formed outer wall 445 offset from the inner wall 443 to form the heat shield. FIG. 4 illustrates a body 423 of the exhaust header generally defined by inner wall 443 enclosing exhaust path 447, which flows into (or out of) the page. The outer wall 445 is integrally formed with, and offset from, the inner wall 443 to form the air gap 451. To secure the heat shield, supports 449 may be strategically positioned between the inner and outer walls 443 and 445. As shown in 447, the support 449 is illustrated in a direction of the arrow A-A, which shows just a small exemplary segment of the structure between the inner and outer walls. The two supports shown in 447 are tabular rather than continuous in nature, and therefore they can allow airflow around the perimeter of the exhaust header 400 with minimal interruption to the circulating airflow. Meanwhile, structural integrity of the integrated heat shield can be maintained permanently, without the shifts that may be associated with wired thermal wraps.

As noted, the heat-shielded exhaust header can be additively manufactured, with the outer wall being co-printed with the remaining components of the exhaust header in a single print job. Co-printing increases manufacturing efficiency and allows for virtually unlimited customization of the design to fit any necessary geometry and size.

The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these exemplary embodiments presented throughout this disclosure will be readily apparent to those skilled in the art. Thus, the claims are not intended to be limited to the exemplary embodiments presented throughout the disclosure, but are to be accorded the full scope consistent with the language claims. All structural and functional equivalents to the elements of the exemplary embodiments described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are intended to be encompassed by the claims. Moreover, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. No claim element is to be construed under the provisions of 35 U.S.C. § 112(f), or analogous law in applicable jurisdictions, unless the element is expressly recited using the phrase “means for” or, in the case of a method claim, the element is recited using the phrase “step for.”

Claims

1. An exhaust header, comprising:

a tubular body having an inner wall configured to transport exhaust gases through the body from an inlet to an outlet at different locations along the body;
an outer wall integrally formed over the tubular body and radially offset from the inner wall, the inner and outer walls defining an air gap therebetween; and
a turbocharger coupled to the outlet to receive the exhaust gases, the turbocharger having an air duct formed thereover for receiving an airflow from the air gap to reduce radial heat outflow.

2. The exhaust header of claim 1, wherein the outer wall is shaped at least in some regions of the tubular body to conform with the inner wall.

3. The exhaust header of claim 1, wherein the tubular body is additively manufactured, the outer wall being co-printed with the inner wall.

4. The exhaust header of claim 1, wherein the tubular body comprises a nickel alloy.

5. The exhaust header of claim 1, further comprising:

a second inlet adjacent one end of the tubular body and arranged on the outer wall; and
a second outlet adjacent another end of the tubular body, wherein the second inlet and the second outlet are configured to provide an airflow passing through the air gap.

6. The exhaust header of claim 5, wherein the outer wall is thinner than the inner wall.

7. The exhaust header of claim 5, wherein a width of the air gap is configured to enable the passing airflow to syphon heat from the exhaust gas and exit the second outlet.

8. The exhaust header of claim 7, wherein the second outlet comprises a thermal syphoning duct configured to direct the heated airflow from an engine bay.

9. The exhaust header of claim 5, wherein the radial offset is configured to vary over different regions of the tubular body.

10. The exhaust header of claim 1, wherein:

the inner wall is coupled to an input of the turbocharger; and
the outer wall is integrally formed over a surface of the turbocharger to enable the air gap to extend across the turbocharger surface.

11. An exhaust header, comprising:

a body having an inner wall enclosing a first channel through which exhaust gases flow from a first inlet to a first outlet at different locations on the body; and
an outer wall extending around, and offset from, the inner wall to integrally form a second channel, the second channel configured to receive an airflow at a second inlet adjacent one region of the body and to pass the airflow to a second outlet adjacent another region of the body; and
a turbocharger coupled to the first outlet to receive the exhaust gases, the turbocharger having an air duct formed thereover for passing the airflow from the second outlet across the turbocharger to reduce radial heat outflow.

12. The exhaust header of claim 11, wherein the outer wall is thinner than the inner wall.

13. The exhaust header of claim 11, wherein the outer wall is offset by at most fifteen (15) millimeters from the inner wall.

14. The exhaust header of claim 11, wherein a thickness of the second channel is spaced to allow the passing airflow to absorb heat from the inner wall of the body before exiting through the second outlet.

15. The exhaust header of claim 11, being a three-dimensional (3D) printed exhaust header.

16. The exhaust header of claim 11, wherein the body comprises a Nickel alloy.

17. The exhaust header of claim 11, further comprising a thermal syphoning duct coupled to the second outlet.

18. The exhaust header of claim 11, wherein the turbocharger includes a turbocharger body, a surface of the turbocharger body having an aperture to receive the exhaust gases at the first outlet.

19. The exhaust header of claim 18, wherein the turbocharger includes a turbocharger duct extending at least in part around the turbocharger body, the turbocharger duct receiving the airflow from the second outlet and directing an airflow around the turbocharger body to a duct outlet.

20. The exhaust header of claim 19, further comprising a thermal syphoning duct coupled to the turbocharger duct.

21. An exhaust header, comprising:

an at least partially elongated, bounded first surface forming a first channel through which exhaust gases are configured to pass from a vehicle engine bay;
a second surface, offset from the first surface and integrally forming a second channel bounded at least in part by the first and second surfaces, the second channel passing an airflow by convection to syphon heat out of the vehicle engine bay; and
a turbocharger coupled to the first channel to receive the exhaust gases, the turbocharger having an air duct formed thereover for receiving an airflow from the second channel to reduce radial heat outflow.

22. The exhaust header of claim 21, wherein the airflow inhibits thermal radiation from the first channel to an area surrounding the exhaust header by absorbing heat from the first surface.

23. The exhaust header of claim 21, wherein the first and second surfaces are formed using additive manufacturing.

24. The exhaust header of claim 21, further comprising a plurality of supports disposed between the first and second surfaces.

Referenced Cited
U.S. Patent Documents
4685292 August 11, 1987 Brigham
5203226 April 20, 1993 Hongou et al.
5742385 April 21, 1998 Champa
5990444 November 23, 1999 Costin
6010155 January 4, 2000 Rinehart
6096249 August 1, 2000 Yamaguchi
6140602 October 31, 2000 Costin
6247552 June 19, 2001 Kovar
6250533 June 26, 2001 Otterbein et al.
6252196 June 26, 2001 Costin et al.
6318642 November 20, 2001 Goenka et al.
6365057 April 2, 2002 Whitehurst et al.
6391251 May 21, 2002 Keicher et al.
6397589 June 4, 2002 Beson
6409930 June 25, 2002 Whitehurst et al.
6468439 October 22, 2002 Whitehurst et al.
6554345 April 29, 2003 Jonsson
6585151 July 1, 2003 Ghosh
6644721 November 11, 2003 Miskech et al.
6811744 November 2, 2004 Keicher et al.
6866497 March 15, 2005 Saiki
6919035 July 19, 2005 Clough
6926970 August 9, 2005 James et al.
7152292 December 26, 2006 Hohmann et al.
7344186 March 18, 2008 Hausler et al.
7500373 March 10, 2009 Quell
7586062 September 8, 2009 Heberer
7637134 December 29, 2009 Burzlaff et al.
7710347 May 4, 2010 Gentilman et al.
7716802 May 18, 2010 Stern et al.
7745293 June 29, 2010 Yamazaki et al.
7766123 August 3, 2010 Sakurai et al.
7852388 December 14, 2010 Shimizu et al.
7908922 March 22, 2011 Zarabadi et al.
7951324 May 31, 2011 Naruse et al.
8094036 January 10, 2012 Heberer
8163077 April 24, 2012 Eron et al.
8286236 October 9, 2012 Jung et al.
8289352 October 16, 2012 Vartanian et al.
8297096 October 30, 2012 Mizumura et al.
8354170 January 15, 2013 Henry et al.
8383028 February 26, 2013 Lyons
8408036 April 2, 2013 Reith et al.
8429754 April 23, 2013 Jung et al.
8437513 May 7, 2013 Derakhshani et al.
8444903 May 21, 2013 Lyons et al.
8452073 May 28, 2013 Taminger et al.
8599301 December 3, 2013 Dowski, Jr. et al.
8606540 December 10, 2013 Haisty et al.
8610761 December 17, 2013 Haisty et al.
8631996 January 21, 2014 Quell et al.
8675925 March 18, 2014 Derakhshani et al.
8678060 March 25, 2014 Dietz et al.
8686314 April 1, 2014 Schneegans et al.
8686997 April 1, 2014 Radet et al.
8694284 April 8, 2014 Berard
8720876 May 13, 2014 Reith et al.
8752166 June 10, 2014 Jung et al.
8755923 June 17, 2014 Farahani et al.
8787628 July 22, 2014 Derakhshani et al.
8818771 August 26, 2014 Gielis et al.
8873238 October 28, 2014 Wilkins
8978535 March 17, 2015 Ortiz et al.
9006605 April 14, 2015 Schneegans et al.
9071436 June 30, 2015 Jung et al.
9101979 August 11, 2015 Hofmann et al.
9104921 August 11, 2015 Derakhshani et al.
9126365 September 8, 2015 Mark et al.
9128476 September 8, 2015 Jung et al.
9138924 September 22, 2015 Yen
9149988 October 6, 2015 Mark et al.
9156205 October 13, 2015 Mark et al.
9186848 November 17, 2015 Mark et al.
9244986 January 26, 2016 Karmarkar
9248611 February 2, 2016 Divine et al.
9254535 February 9, 2016 Buller et al.
9266566 February 23, 2016 Kim
9269022 February 23, 2016 Rhoads et al.
9327452 May 3, 2016 Mark et al.
9329020 May 3, 2016 Napoletano
9332251 May 3, 2016 Haisty et al.
9346127 May 24, 2016 Buller et al.
9389315 July 12, 2016 Bruder et al.
9399256 July 26, 2016 Buller et al.
9403235 August 2, 2016 Buller et al.
9418193 August 16, 2016 Dowski, Jr. et al.
9457514 October 4, 2016 Schwärzler
9469057 October 18, 2016 Johnson et al.
9478063 October 25, 2016 Rhoads et al.
9481402 November 1, 2016 Muto et al.
9486878 November 8, 2016 Buller et al.
9486960 November 8, 2016 Paschkewitz et al.
9502993 November 22, 2016 Deng
9525262 December 20, 2016 Stuart et al.
9533526 January 3, 2017 Nevins
9555315 January 31, 2017 Aders
9555580 January 31, 2017 Dykstra et al.
9557856 January 31, 2017 Send et al.
9566742 February 14, 2017 Keating et al.
9566758 February 14, 2017 Cheung et al.
9573193 February 21, 2017 Buller et al.
9573225 February 21, 2017 Buller et al.
9586290 March 7, 2017 Buller et al.
9595795 March 14, 2017 Lane et al.
9597843 March 21, 2017 Stauffer et al.
9600929 March 21, 2017 Young et al.
9609755 March 28, 2017 Coull et al.
9610737 April 4, 2017 Johnson et al.
9611667 April 4, 2017 GangaRao et al.
9616623 April 11, 2017 Johnson et al.
9626487 April 18, 2017 Jung et al.
9626489 April 18, 2017 Nilsson
9643361 May 9, 2017 Liu
9662840 May 30, 2017 Buller et al.
9665182 May 30, 2017 Send et al.
9672389 June 6, 2017 Mosterman et al.
9672550 June 6, 2017 Apsley et al.
9676145 June 13, 2017 Buller et al.
9684919 June 20, 2017 Apsley et al.
9688032 June 27, 2017 Kia et al.
9690286 June 27, 2017 Hovsepian et al.
9700966 July 11, 2017 Kraft et al.
9703896 July 11, 2017 Zhang et al.
9713903 July 25, 2017 Paschkewitz et al.
9718302 August 1, 2017 Young et al.
9718434 August 1, 2017 Hector, Jr. et al.
9724877 August 8, 2017 Flitsch et al.
9724881 August 8, 2017 Johnson et al.
9725178 August 8, 2017 Wang
9731730 August 15, 2017 Stiles
9731773 August 15, 2017 Gami et al.
9741954 August 22, 2017 Bruder et al.
9747352 August 29, 2017 Karmarkar
9764415 September 19, 2017 Seufzer et al.
9764520 September 19, 2017 Johnson et al.
9765226 September 19, 2017 Dain
9770760 September 26, 2017 Liu
9773393 September 26, 2017 Velez
9776234 October 3, 2017 Schaafhausen et al.
9782936 October 10, 2017 Glunz et al.
9783324 October 10, 2017 Embler et al.
9783977 October 10, 2017 Alqasimi et al.
9789548 October 17, 2017 Golshany et al.
9789922 October 17, 2017 Dosenbach et al.
9796137 October 24, 2017 Zhang et al.
9802108 October 31, 2017 Aders
9809977 November 7, 2017 Carney et al.
9817922 November 14, 2017 Glunz et al.
9818071 November 14, 2017 Jung et al.
9821339 November 21, 2017 Paschkewitz et al.
9821411 November 21, 2017 Buller et al.
9823143 November 21, 2017 Twelves, Jr. et al.
9829564 November 28, 2017 Bruder et al.
9846933 December 19, 2017 Yuksel
9854828 January 2, 2018 Langeland
9858604 January 2, 2018 Apsley et al.
9862833 January 9, 2018 Hasegawa et al.
9862834 January 9, 2018 Hasegawa et al.
9863885 January 9, 2018 Zaretski et al.
9870629 January 16, 2018 Cardno et al.
9879981 January 30, 2018 Dehghan Niri et al.
9884663 February 6, 2018 Czinger et al.
9898776 February 20, 2018 Apsley et al.
9914150 March 13, 2018 Pettersson et al.
9919360 March 20, 2018 Buller et al.
9931697 April 3, 2018 Levin et al.
9933031 April 3, 2018 Bracamonte et al.
9933092 April 3, 2018 Sindelar
9957031 May 1, 2018 Golshany et al.
9958535 May 1, 2018 Send et al.
9962767 May 8, 2018 Buller et al.
9963978 May 8, 2018 Johnson et al.
9971920 May 15, 2018 Derakhshani et al.
9976063 May 22, 2018 Childers et al.
9987792 June 5, 2018 Flitsch et al.
9988136 June 5, 2018 Tiryaki et al.
9989623 June 5, 2018 Send et al.
9990565 June 5, 2018 Rhoads et al.
9994339 June 12, 2018 Colson et al.
9996890 June 12, 2018 Cinnamon et al.
9996945 June 12, 2018 Holzer et al.
10002215 June 19, 2018 Dowski et al.
10006156 June 26, 2018 Kirkpatrick
10011089 July 3, 2018 Lyons et al.
10011685 July 3, 2018 Childers et al.
10012532 July 3, 2018 Send et al.
10013777 July 3, 2018 Mariampillai et al.
10015908 July 3, 2018 Williams et al.
10016852 July 10, 2018 Broda
10016942 July 10, 2018 Mark et al.
10017384 July 10, 2018 Greer et al.
10018576 July 10, 2018 Herbsommer et al.
10022792 July 17, 2018 Srivas et al.
10022912 July 17, 2018 Kia et al.
10027376 July 17, 2018 Sankaran et al.
10029415 July 24, 2018 Swanson et al.
10040239 August 7, 2018 Brown, Jr.
10046412 August 14, 2018 Blackmore
10048769 August 14, 2018 Selker et al.
10052712 August 21, 2018 Blackmore
10052820 August 21, 2018 Kemmer et al.
10055536 August 21, 2018 Maes et al.
10058764 August 28, 2018 Aders
10058920 August 28, 2018 Buller et al.
10061906 August 28, 2018 Nilsson
10065270 September 4, 2018 Buller et al.
10065361 September 4, 2018 Susnjara et al.
10065367 September 4, 2018 Brown, Jr.
10068316 September 4, 2018 Holzer et al.
10071422 September 11, 2018 Buller et al.
10071525 September 11, 2018 Susnjara et al.
10072179 September 11, 2018 Drijfhout
10074128 September 11, 2018 Colson et al.
10076875 September 18, 2018 Mark et al.
10076876 September 18, 2018 Mark et al.
10081140 September 25, 2018 Paesano et al.
10081431 September 25, 2018 Seack et al.
10086568 October 2, 2018 Snyder et al.
10087320 October 2, 2018 Simmons et al.
10087556 October 2, 2018 Gallucci et al.
10099427 October 16, 2018 Mark et al.
10100542 October 16, 2018 GangaRao et al.
10100890 October 16, 2018 Bracamonte et al.
10107344 October 23, 2018 Bracamonte et al.
10108766 October 23, 2018 Druckman et al.
10113600 October 30, 2018 Bracamonte et al.
10118347 November 6, 2018 Stauffer et al.
10118579 November 6, 2018 Lakic
10120078 November 6, 2018 Bruder et al.
10124546 November 13, 2018 Johnson et al.
10124570 November 13, 2018 Evans et al.
10137500 November 27, 2018 Blackmore
10138354 November 27, 2018 Groos et al.
10144126 December 4, 2018 Krohne et al.
10145110 December 4, 2018 Carney et al.
10151363 December 11, 2018 Bracamonte et al.
10152661 December 11, 2018 Kieser
10160278 December 25, 2018 Coombs et al.
10161021 December 25, 2018 Lin et al.
10166752 January 1, 2019 Evans et al.
10166753 January 1, 2019 Evans et al.
10171578 January 1, 2019 Cook et al.
10173255 January 8, 2019 TenHouten et al.
10173327 January 8, 2019 Kraft et al.
10178800 January 8, 2019 Mahalingam et al.
10179640 January 15, 2019 Wilkerson
10183330 January 22, 2019 Buller et al.
10183478 January 22, 2019 Evans et al.
10189187 January 29, 2019 Keating et al.
10189240 January 29, 2019 Evans et al.
10189241 January 29, 2019 Evans et al.
10189242 January 29, 2019 Evans et al.
10190424 January 29, 2019 Johnson et al.
10195693 February 5, 2019 Buller et al.
10196539 February 5, 2019 Boonen et al.
10197338 February 5, 2019 Melsheimer
10200677 February 5, 2019 Trevor et al.
10201932 February 12, 2019 Flitsch et al.
10201941 February 12, 2019 Evans et al.
10202673 February 12, 2019 Lin et al.
10204216 February 12, 2019 Nejati et al.
10207454 February 19, 2019 Buller et al.
10209065 February 19, 2019 Estevo, Jr. et al.
10210662 February 19, 2019 Holzer et al.
10213837 February 26, 2019 Kondoh
10214248 February 26, 2019 Hall et al.
10214252 February 26, 2019 Schellekens et al.
10214275 February 26, 2019 Goehlich
10220575 March 5, 2019 Reznar
10220881 March 5, 2019 Tyan et al.
10221530 March 5, 2019 Driskell et al.
10226900 March 12, 2019 Nevins
10232550 March 19, 2019 Evans et al.
10234342 March 19, 2019 Moorlag et al.
10237477 March 19, 2019 Trevor et al.
10252335 April 9, 2019 Buller et al.
10252336 April 9, 2019 Buller et al.
10254499 April 9, 2019 Cohen et al.
10257499 April 9, 2019 Hintz et al.
10259044 April 16, 2019 Buller et al.
10268181 April 23, 2019 Nevins
10269225 April 23, 2019 Velez
10272860 April 30, 2019 Mohapatra et al.
10272862 April 30, 2019 Whitehead
10275564 April 30, 2019 Ridgeway et al.
10279580 May 7, 2019 Evans et al.
10285219 May 7, 2019 Fetfatsidis et al.
10286452 May 14, 2019 Buller et al.
10286603 May 14, 2019 Buller et al.
10286961 May 14, 2019 Hillebrecht et al.
10289263 May 14, 2019 Troy et al.
10289875 May 14, 2019 Singh et al.
10291193 May 14, 2019 Dandu et al.
10294552 May 21, 2019 Liu et al.
10294982 May 21, 2019 Gabrys et al.
10295989 May 21, 2019 Nevins
10303159 May 28, 2019 Czinger et al.
10307824 June 4, 2019 Kondoh
10310197 June 4, 2019 Droz et al.
10313651 June 4, 2019 Trevor et al.
10315252 June 11, 2019 Mendelsberg et al.
10336050 July 2, 2019 Susnjara
10337542 July 2, 2019 Hesslewood et al.
10337952 July 2, 2019 Bosetti et al.
10339266 July 2, 2019 Urick et al.
10343330 July 9, 2019 Evans et al.
10343331 July 9, 2019 McCall et al.
10343355 July 9, 2019 Evans et al.
10343724 July 9, 2019 Polewarczyk et al.
10343725 July 9, 2019 Martin et al.
10350823 July 16, 2019 Rolland et al.
10356341 July 16, 2019 Holzer et al.
10356395 July 16, 2019 Holzer et al.
10357829 July 23, 2019 Spink et al.
10357957 July 23, 2019 Buller et al.
10359756 July 23, 2019 Newell et al.
10369629 August 6, 2019 Mendelsberg et al.
10382739 August 13, 2019 Rusu et al.
10384393 August 20, 2019 Xu et al.
10384416 August 20, 2019 Cheung et al.
10389410 August 20, 2019 Brooks et al.
10391710 August 27, 2019 Mondesir
10392097 August 27, 2019 Pham et al.
10392131 August 27, 2019 Deck et al.
10393315 August 27, 2019 Tyan
10400080 September 3, 2019 Ramakrishnan et al.
10401832 September 3, 2019 Snyder et al.
10403009 September 3, 2019 Mariampillai et al.
10406750 September 10, 2019 Barton et al.
10412283 September 10, 2019 Send et al.
10416095 September 17, 2019 Herbsommer et al.
10421496 September 24, 2019 Swayne et al.
10421863 September 24, 2019 Hasegawa et al.
10422478 September 24, 2019 Leachman et al.
10425793 September 24, 2019 Sankaran et al.
10427364 October 1, 2019 Alves
10429006 October 1, 2019 Tyan et al.
10434573 October 8, 2019 Buller et al.
10435185 October 8, 2019 Divine et al.
10435773 October 8, 2019 Liu et al.
10436038 October 8, 2019 Buhler et al.
10438407 October 8, 2019 Pavanaskar et al.
10440351 October 8, 2019 Holzer et al.
10442002 October 15, 2019 Benthien et al.
10442003 October 15, 2019 Symeonidis et al.
10449696 October 22, 2019 Elgar et al.
10449737 October 22, 2019 Johnson et al.
10461810 October 29, 2019 Cook et al.
10801380 October 13, 2020 Sousley
20040109759 June 10, 2004 Korner
20060108783 May 25, 2006 Ni et al.
20090158724 June 25, 2009 Muller
20130000299 January 3, 2013 Badagharwala
20140277669 September 18, 2014 Nardi et al.
20150300235 October 22, 2015 Wegener
20170113344 April 27, 2017 Schonberg
20170341309 November 30, 2017 Piepenbrock et al.
Foreign Patent Documents
4127634 February 1993 DE
4127634 February 1993 DE
102014014846 April 2015 DE
1996036455 November 1996 WO
1996036525 November 1996 WO
1996038260 December 1996 WO
2003024641 March 2003 WO
2004108343 December 2004 WO
2005093773 October 2005 WO
2007003375 January 2007 WO
2007110235 October 2007 WO
2007110236 October 2007 WO
2008019847 February 2008 WO
2007128586 June 2008 WO
2008068314 June 2008 WO
2008086994 July 2008 WO
2008087024 July 2008 WO
2008107130 September 2008 WO
2008138503 November 2008 WO
2008145396 December 2008 WO
2009083609 July 2009 WO
2009098285 August 2009 WO
2009112520 September 2009 WO
2009135938 November 2009 WO
2009140977 November 2009 WO
2010125057 November 2010 WO
2010125058 November 2010 WO
2010142703 December 2010 WO
2011032533 March 2011 WO
2014016437 January 2014 WO
2014187720 November 2014 WO
2014195340 December 2014 WO
2015193331 December 2015 WO
2016116414 July 2016 WO
2017036461 March 2017 WO
2019030248 February 2019 WO
2019042504 March 2019 WO
2019048010 March 2019 WO
2019048498 March 2019 WO
2019048680 March 2019 WO
2019048682 March 2019 WO
Other references
  • US 9,202,136 B2, 12/2015, Schmidt et al. (withdrawn)
  • US 9,809,265 B2, 11/2017, Kinjo (withdrawn)
  • US 10,449,880 B2, 10/2019, Mizobata et al. (withdrawn)
  • International Search Report issued in PCT/US2021/019626, dated Jun. 11, 2021.
Patent History
Patent number: 11421577
Type: Grant
Filed: Feb 24, 2021
Date of Patent: Aug 23, 2022
Patent Publication Number: 20210262379
Assignee: DIVERGENT TECHNOLOGIES, INC. (Los Angeles, CA)
Inventors: John Russell Bucknell (El Segundo, CA), Michael Vasile (Rancho Mirage, CA), Michael Bolton (Manhattan Beach, CA)
Primary Examiner: Devon C Kramer
Assistant Examiner: Kelsey L Stanek
Application Number: 17/184,428
Classifications
Current U.S. Class: Exhaust Gas Or Exhaust System Element Heated, Cooled, Or Used As A Heat Source (60/320)
International Classification: F01N 13/10 (20100101); B33Y 80/00 (20150101); F02B 37/02 (20060101);